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Prepare gep for opaque pointers

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Implement gep using LLVMBuildGEP2 which takes an explicit type argument
instead of deriving it from a pointer type.
This commit is contained in:
Tomasz Miąsko 2021-07-31 00:00:00 +00:00
parent 838042aa4e
commit 4013e094f5
6 changed files with 13 additions and 9 deletions
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4
compiler/rustc_codegen_llvm/src/va_arg.rs
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@ -146,11 +146,11 @@ fn emit_aapcs_va_arg(
let top = in_reg.load(top_type, top, bx.tcx().data_layout.pointer_align.abi);
// reg_value = *(@top + reg_off_v);
let mut reg_addr = in_reg.gep(top, &[reg_off_v]);
let mut reg_addr = in_reg.gep(bx.type_i8(), top, &[reg_off_v]);
if bx.tcx().sess.target.endian == Endian::Big && layout.size.bytes() != slot_size {
// On big-endian systems the value is right-aligned in its slot.
let offset = bx.const_i32((slot_size - layout.size.bytes()) as i32);
reg_addr = in_reg.gep(reg_addr, &[offset]);
reg_addr = in_reg.gep(bx.type_i8(), reg_addr, &[offset]);
}
let reg_type = layout.llvm_type(bx);
let reg_addr = in_reg.bitcast(reg_addr, bx.cx.type_ptr_to(reg_type));